Virus that survives 4 reformatings!

My computer is infected with a particularly vicious virus that means that whenever I click on something (file, message in hotmail), it deletes it or asks me if if want to send it to the recycle bin (I can't reply no, the window stays open). Avast, AVG, Macafee, Trendmicro, Panda, PC Tools, do not detect any infection...I painstakingly managed to reformat trying different boot modes and did so 4 four times but the problem always comes back. The virus (or is something else?) is also active in safe mode.

Has anyone heard of this? I really appreciate your help in defeating this nasty little bugger!

The information on Computing.Net is the opinions of its users. Such
opinions may not be accurate and they are to be used at your own risk.
Computing.Net cannot verify the validity of the statements made on this
site. Computing.Net and Compnet Ventures, LLC hereby disclaim all responsibility
and liability for the content of Computing.Net and its accuracy.